I think apple makes the requirements higher than is necessary so that it has room for running programs and all that - keep things running smooth. Also, I think they're going to make an intel only OS sometime soon, so maybe 10.6 will be G5 or better, and then 10.7 intel only. Gotta do things incrementally so that its not a sudden thing. Either way, the people who bought the G5 quads won't be happy when it happens.

Well, this thread has taken a turn. I would have to guess that the new OS will use around 100MB running in the background. With so many apps built into the OS, there is of course more ram needed. I suspect that my QS will be marginal running 10.5. I will be sure to run two OSs for some time yet.

My Tiger Kernel is currently munching about 140MB. Thats on a MacBook though. I'll bet the PPC version is way smaller.Intel versions of the OS have been much bigger to date. I wonder if any kind of optimisation in Leopard can help with that.I bet there are certain tasks which would run massively quicker in a G5 quad than in a Mac Pro with the same amounts of RAM.

Actually you can put 2x2GB in the macbook, macbook pro, mini and lower end imacs but they will only recognize 3.3GB. This is why 3GB kits exist and not 4GB.

Even though you would have a matched pair with 4GB I doubt you would get all the possible matched performance as it wouldn't recognize over 700MB of one of the 2GB sticks.

You can probably put a 1Gb DIMM in with a 2Gb DIMM and reap the same benefits, so long as all other specs are equal.

Originally Posted By: "Waragainstsleep "

My Tiger Kernel is currently munching about 140MB. Thats on a MacBook though. I'll bet the PPC version is way smaller.Intel versions of the OS have been much bigger to date. I wonder if any kind of optimisation in Leopard can help with that.I bet there are certain tasks which would run massively quicker in a G5 quad than in a Mac Pro with the same amounts of RAM.

Maybe not quicker, or if so, not by much, but certainly less resource-hungry.

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